Powertrain Issues ('Shift to Park' System)

The 'Shift to Park' system is a recurring problem, preventing the vehicle from being turned off properly. This can lead to security risks and potential carbon monoxide buildup if the vehicle is left running in an enclosed space. Multiple dealer visits may be required for a permanent fix. Estimated repair cost: $300 - $800.

Engine Issues (EGR Valve)

Failures of the Exhaust Gas Recirculation (EGR) valve can lead to propulsion loss and reduced engine performance. Like other critical components, parts backorders can significantly extend repair times, impacting ownership. Estimated repair cost: $500 - $1,000.

Fuel/Propulsion System

Issues within the fuel and propulsion system are frequent, often related to the complex interplay between the electric motors and the gasoline engine. This can manifest as inconsistent power delivery or warning lights. Estimated repair cost: $400 - $1,200.

CARFOCALvehicle research

2018 Chevrolet Volt Maintenance guide

Name: Maintenance dataset for 2018 Chevrolet Volt
Creator: Carfocal

v1.0Updated May 30, 2026Daniel Wilson4 Sources Analyzed1 Critical Recalls

MAINTENANCE SUMMARY

The 2018 Chevrolet Volt, with a 'Below Average' reliability verdict, demands diligent maintenance due to significant recurring issues in its electrical system and powertrain. Owners should prioritize inspections for BECM, EGR valve, and the 'Shift to Park' system, as these components are prone to failure, leading to propulsion loss and safety concerns.

View Critical Issue: Electrical System Failures (BECM)

Subscribe to Recall Alerts Subscribe to Recall Alerts

Reliability Score

Est. Annual Maintenance Cost

$500 - $900

TSBs & Recalls

373 TSBs | 2 Recalls

CarFocal account required

Unlock the Full 2018 Chevrolet Volt Maintenance Guide

Create a free account to reveal the full service schedule, repair costs, and deeper diagnostic data.

Key Takeaways

The 2018 Chevrolet Volt has a 'Below Average' reliability rating.
Electrical system and powertrain issues are the most common complaints.

3 more takeaways unlock below

Critical service intervals

Common failure analysis

Symptoms and prevention guidance